I don’t know all the details about multi client installations (like classrooms), but there is a Multiuser Installation Guide in the Support area, that might give you the information you need.
Sound content installation can quickly become a nightmare. You have to make sure that everything below the folder
Win: C:\ProgramData\Steinberg\Content
Mac: /Macintosh HD/Library/Application\ Support/Steinberg/Content
is readable for any user.